hoffman900 wrote: ↑Thu Sep 22, 2022 11:48 pm
Tom Walker wrote: ↑Thu Sep 22, 2022 11:35 pm
Why should our discussions have to become personal and demeaning?
We are all adults, if you have a different opinion or view, that is awesome, why can’t we express that thought in a respect way?
We have a tremendous community here with some of the most talented and knowledgeable people in this industry. Let’s speak to and about each other in a way that reflects that.
This whole thing with David and how to pick cams debate has been going on here for over ten years. You have had Mike Jones, the late Harold Brookshire, even guys like Jay Wiles (of Hendricks), and Billy Godbold elsewhere specifically say the events matter, not LSA and “overlap is what it is”, and when either they have said it themselves or this has been pointed out, a bunch of people who probably couldn’t tell you what acceleration or jerk is and why it’s important swoop in and make it personal, and now we have DV making ridiculous videos on Youtube to an audience that appears in the comments to be fans of his and don’t know why what th debate even is. I bet if I add up all the 128 threads, we would be over 100 pages of this here and this all could have been taken care of in a single page of posts. IMO, this has chased away a lot of smart people here over the years who have no interest in arguing with people who don’t want to learn.
Well said.
What is clear, is there is a lot of unknowns about the internal combustion engine, even on our 3rd decade into the 21st Century.
I for one, am ecstatic about that. There are still some milestones to be had in the search for the best mileage or the highest HP. We've come out of the dark ages of the late '70s to mid '90s.
As enthusiasts, arguably the best and most enjoyable engines we'll ever build up will be the very first few. Steep learning curves, harvesting knowledge, the pitfalls, and the Frankenstein experience of creating mechanical life.
To guide us, where would we be? Without Smokey Yunick...David Vizard...etc...and all the racing pioneers that became entrepreneurs....making parts for us to get after it.
Right or wrong, DV is trying to make cam selection... something that is rather complicated, easier to end up with an effective solution. In my view, that is commendable.
One factor on the 128 formula, I would like to see more data that speaks to exactly what is being achieved, vs just more power that is left on the table from sub optimal cam events.
So with an LSA suitable for the CID and valves etc, is that power from better efficiency...or just ends up using more F/A charge? Will it drop the BSFC?
For me, on my current marine engine build, I'm limited in Max HP somewhat...so I don't blow out the transmission or outdrive. ...and doing 65-70mph in a Formula 233 is likely fast enough.
500HP from a 406 SBC @ 5700 ish. I'd likely settle with 450, but if I shoot for the 500, I'll be more likely to attain the 450-475.
Most of my thoughts are on part throttle running. Where higher CR is a benefit. High vacuum, and pumping losses. Getting a really low BSFC is one of the primary goals.
The 128 Formula is just a tool for me to use. As is TM...Pipe Max....and some good engine software. I'm looking forward to Pipe Max...as it seems to list the harmonics of the intake and exhaust. Where I can tune my system to be the most efficient at a good cruise speed.
I'm grateful for the DV vids he is producing. Dude just had brain surgery, lost his daughter tragically, and is still getting after it. We're fortunate we had an engineer willing to write to us as enthusiasts for all these years. Thank you for your voice David.